<script>on mouseUpput the short name of this card into xTempput char 2 to 6 of xTemp & ".mov" into Movie--put Movieif Movie is not empty then-- put "Animations:" & Movie into pMovieplayMovie Movie,"Animations:"end ifend mouseUp</script>
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<text><span class="style10">orces affecting Solids and Fluids (8 of 9)Fluids at rest - hydrostatics</span><span class="style7"></span><span class="style26">Pressure</span><span class="style7"> is defined as the perpendicular or normal force per unit area of a plane surface in the fluid, and its unit is the </span><span class="style26">pascal</span><span class="style7"> (Pa), equivalent to 1 newton per square meter (N m2). At all points in the fluid at the same depth the pressure is the same. The pressure depends only on depth in an enclosed fluid, and is independent of cross-sectional area. In the hydraulic brakes of a car, a force is applied by the foot pedal to a small piston. The pressure is transmitted via the hydraulic fluid to a larger piston connected to the brake. In this way the force applied to the brake is magnified by comparison with the force applied to the pedal.</span><span class="style26">Atmospheric pressure</span><span class="style7"> may be measured using a barometer. At sea level, it is equivalent to the weight of a column of mercury about 0.76 m high, which is about 1.01 x 105 Pa. It varies by up to about 5%, depending on the weather systems passing overhead.</span></text>
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<text><span class="style10">. Hydraulic brakes</span><span class="style7">: a simple hydraulic system.</span></text>
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<text>ΓÇó MOTION AND FORCEΓÇó THERMODYNAMICSΓÇó HOW CARS WORK</text>